| Duffel to Jeffersonville (Indiana) | 4,232.57 mi (6,811.67 km) |
| Duffel to Jenison (Michigan) | 4,020.70 mi (6,470.68 km) |
| Duffel to Jenks (Oklahoma) | 4,739.62 mi (7,627.68 km) |
| Duffel to Jennings (Missouri) | 4,388.30 mi (7,062.28 km) |
| Duffel to Jensen Beach (Florida) | 4,557.89 mi (7,335.22 km) |
| Duffel to Jericho (New York) | 3,637.32 mi (5,853.70 km) |
| Duffel to Jerome (Idaho) | 4,995.39 mi (8,039.30 km) |
| Duffel to Jersey City (New Jersey) | 3,661.65 mi (5,892.85 km) |
| Duffel to Jessup (Maryland) | 3,841.20 mi (6,181.82 km) |
| Duffel to Johns Creek (Georgia) | 4,383.02 mi (7,053.79 km) |
| Duffel to Johnson City (New York) | 3,675.74 mi (5,915.54 km) |
| Duffel to Johnson City (Tennessee) | 4,197.73 mi (6,755.59 km) |
| Duffel to Johnston (Iowa) | 4,368.76 mi (7,030.84 km) |
| Duffel to Johnstown (Colorado) | 4,826.49 mi (7,767.49 km) |
| Duffel to Johnstown (Pennsylvania) | 3,873.23 mi (6,233.35 km) |
